2 /**************************************************************************
3 * This file is property of and copyright by the ALICE HLT Project *
4 * ALICE Experiment at CERN, All rights reserved. *
6 * Primary Authors: Svein Lindal (slindal@fys.uio.no) *
7 * for The ALICE HLT Project. *
9 * Permission to use, copy, modify and distribute this software and its *
10 * documentation strictly for non-commercial purposes is hereby granted *
11 * without fee, provided that the above copyright notice appears in all *
12 * copies and that both the copyright notice and this permission notice *
13 * appear in the supporting documentation. The authors make no claims *
14 * about the suitability of this software for any purpose. It is *
15 * provided "as is" without express or implied warranty. *
16 **************************************************************************/
18 /** @file AliHLTGlobalTrackMatcher.cxx
21 @brief The HLT class Matching Calorimeter clusters to TPC tracks
24 #include "AliHLTGlobalTrackMatcher.h"
31 ClassImp(AliHLTGlobalTrackMatcher)
34 AliHLTGlobalTrackMatcher::AliHLTGlobalTrackMatcher() :
40 fMatchDistanceEMCal(0),
50 //_____________________________________________________________________________
51 AliHLTGlobalTrackMatcher::~AliHLTGlobalTrackMatcher()
57 void AliHLTGlobalTrackMatcher::DoInit( ) {
58 //See header file for documentation
59 //BALLE TODO: Change hardcoded values to something that is initialised through command line or something!!!
62 fMatchDistance = 40*40;
63 fMatchDistanceEMCal = 0.1; // EMCal EtaxPhi cut
65 fPhosMaxX = 355 + TMath::Sqrt(fMatchDistance) + 30;
66 fPhosMaxZ = 64.+ TMath::Sqrt(fMatchDistance) + 30;
68 fEmcalMaxZ = 350 + TMath::Sqrt(fMatchDistance) + 30;
71 fStep=100.;// Step for EMCAL extrapolation
72 fMass=0.139;// Mass for EMCAL extrapolation hipothesis
76 Int_t AliHLTGlobalTrackMatcher::AddTrackToCluster(Int_t tId, TArrayI* matchedTracksArray, Bool_t bestMatch, Int_t nMatches){
77 //See header file for documentation
79 matchedTracksArray->Set(matchedTracksArray->GetSize() + 1);
81 matchedTracksArray->AddAt(matchedTracksArray->At(0), matchedTracksArray->GetSize() - 1);
82 matchedTracksArray->AddAt(tId, 0);
84 matchedTracksArray->AddAt(tId, matchedTracksArray->GetSize() - 1);
90 Int_t AliHLTGlobalTrackMatcher::AddTrackToCluster(Int_t tId, Int_t* matchArray, bool bestMatch, Int_t nMatches ){
92 // HLTInfo("Adding track %d to cluster with %d previous matches", tId, nMatches);
94 //BALLE TODO: remove hardcoded 9
95 if (nMatches > 9) { //BALLE this on tooo
96 HLTDebug("The number of matching tracks (%d) exceeds the array size of %d", nMatches, 9);
102 matchArray[nMatches] = matchArray[0];
105 matchArray[nMatches] = tId;
112 Bool_t AliHLTGlobalTrackMatcher::IsTrackCloseToDetector(AliExternalTrackParam * track, Double_t bz, Double_t fMaxX, Bool_t ySign, Double_t fMaxZ, Double_t dRadius) {
113 //See header file for documentation
115 //Positive y for EMCAL, negative for PHOS
118 if (track->Pt()<1.) return kFALSE;
119 if (track->Eta()>.8||track->Eta()<-.8) return kFALSE;
120 if (track->Phi()>4.||track->Phi()<1.) return kFALSE;
123 //Get track instersection with cylinder defined by detector radius
124 Double_t trackPosition[3] = {0, 0, 0};
125 if (! (track->GetXYZAt(dRadius, bz, trackPosition)) ) {
128 if (trackPosition[1] > 0 )
130 if ( (TMath::Abs(trackPosition[2]) > fMaxZ) )
132 if (TMath::Abs(trackPosition[0]) > fMaxX )